Democratic presidential hopeful, Sen. Hillary Rodham Clinton, D-N.Y., speaks during a campaign stop in Cedar Rapids, Iowa, Wednesday, Jan. 2, 2008 on the last day of presidential candidates' campaigning before the Iowa caucus. less

Democratic presidential hopeful, Sen. Hillary Rodham Clinton, D-N.Y., speaks during a campaign stop in Cedar Rapids, Iowa, Wednesday, Jan. 2, 2008 on the last day of presidential candidates' campaigning before ... more

Democratic presidential hopeful, Sen. Hillary Rodham Clinton, D-N.Y., waves as she thanks volunteers at her campaign headquarters in Boston Monday, Feb. 4, 2008, one day before the primary elections on Super Tuesday.wld less

Democratic presidential hopeful, Sen. Hillary Rodham Clinton, D-N.Y., waves as she thanks volunteers at her campaign headquarters in Boston Monday, Feb. 4, 2008, one day before the primary elections on Super ... more

Democratic presidential hopeful, Sen. Hillary Clinton, D-N.Y., celebrates with her husband former President Clinton during a victory party after winning the democratic New Hampshire Primary in Manchester, N.H., Tuesday Jan. 8, 2008. less

Democratic presidential hopeful, Sen. Hillary Clinton, D-N.Y., celebrates with her husband former President Clinton during a victory party after winning the democratic New Hampshire Primary in Manchester, N.H., ... more

Democratic Presidential hopeful, Sen. Hillary Rodham Clinton, D-N.Y. carries a box of coffee as she and daughter, Chelsea, second from left, visit a polling place on primary day in Manchester, N.H., Tuesday, Jan. 8, 2008. less

Democratic Presidential hopeful, Sen. Hillary Rodham Clinton, D-N.Y. carries a box of coffee as she and daughter, Chelsea, second from left, visit a polling place on primary day in Manchester, N.H., Tuesday, ... more

Supporters cheer on Democratic presidential hopeful, Sen. Hillary Clinton, D-N.Y., during a campaign stop at Clark University in Worcester, Mass., Monday Feb. 4, 2008, in the final campaign push before Super Tuesday. less

Supporters cheer on Democratic presidential hopeful, Sen. Hillary Clinton, D-N.Y., during a campaign stop at Clark University in Worcester, Mass., Monday Feb. 4, 2008, in the final campaign push before Super ... more

Democratic presidential hopeful Sen. Hillary Rodham Clinton, D-N.Y., bends to whisper in the ear of Molly McGovern, 6, as her father, Rep. James McGovern, D-Mass., introduces her at a rally for Clinton at Clark University in Worcester, Mass. Monday, Feb. 4, 2008, in the final campaign push before Super Tuesday. less

Democratic presidential hopeful Sen. Hillary Rodham Clinton, D-N.Y., bends to whisper in the ear of Molly McGovern, 6, as her father, Rep. James McGovern, D-Mass., introduces her at a rally for Clinton at Clark ... more